Table 1.

Characteristics of street-involved youth in Vancouver, Canada with no history of drug dealing at baseline (n= 194).

Characteristic	n, (%)
Age at baseline (median, IQRa)	22 (20 – 23)
Age at first hard drug use (median, IQR)	16 (15 – 18)
Hard drug use durationb (median, IQR)	7 (5 – 10)
Female Gender	91 (46.9)
Caucasian Ethnicity	127 (65.5)
High School Incompletion	111 (57.2)
Homelessness c	166 (85.6)
Incarceration c	55 (28.4)
Heavy alcohol use c	41 (21.1)
Crystal methamphetamine use c
Any use	125 (64.4)
≥Daily use (injection and/or non-injection)	48 (24.7)
Injection	55 (28.4)
Cocaine use c
Any use	118 (60.8)
≥Daily use (injection and/or non-injection)	12 (6.2)
Injection	27 (13.9)
Heroin use c
Any use	(41.8)
≥Daily use (injection and/or non-injection)	30 (15.5)
Injection	56 (28.9)
Crack use c
Any use	121 (62.4)
≥Daily use (injection and/or non-injection)	35 (18.0)
Injection	11 (5.7)
Marijuana use c
Any use	177 (91.2)
≥Daily use	116 (59.8)

Note:

^aIQR = Interquartile range;

^bCalculated as years since first hard drug use at last study visit;

^cRefers to having engaged in behavior or experienced characteristic at baseline or some point over the study period